Trimming-chair for forgings.



III.

PATENTED APR. 21, 1908.

wrzy L. P. BLOT.

APPLICATION FILED DEC. 20, 19 07.

TRIMMING CHAIR FOR FORGINGS.

Jamie/a2 3X06;

LUOIEN P. BLO'l, OF SPRINGFIELD, MASSACHUSETTS.

TRIMMING-OHAIR FOR FORGINGS.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed December 20, 1907. Serial No. 40 7,328.

To all whom it may concern:

Be it known that I, LUCIEN P. 131.01, a citizen of the United States of America, and resident of Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Trimming-Chairs for Forgings, of which the following is a full, clear, and exact description.

As well known, forgings coming from the forging drop in which they are roduced by the forging dies, come out witi fins or flashes as termed around the middle portion of the body of the forging and such fins or flashes are removed either while the forging is still red-hot, or when cool, by being subjected to the action of trimming dies.

The trimming dies comprise a hollow body or chair having at the to thereof a die plate with an o ening theretfirough, having the shape of t e desired finished forging,the chair or hollow body being open at its end, and for coaction therewith a male or plunger die is em loyed to drive the forging through the die p ate 0 ening to effect the removal of the flash; and t en with a tongs, or otherwise, the trimmed forging is drawn out through the end 0 ening in the chair.

Hereto ore, the trimming chair, endwise open as mentioned, has left the die plate unsupported at the end portion of such die plate which spans the open end of the chair; and in usage, after a comparatively short time such unsupported end portion of the die late has become distorted or ruptured, makmg its replacement necessary at the cost of money and time.

The present invention consists in a hollow metallic body or chair having an opening at its end, and including a top plate provided with a trimming die opening therethrough,

and a member which is hinge connected to the end portion of the chair and movable to have a supporting engagement under the end of the die plate and to be displaced from the open end of the chair for freely permitting the withdrawal of a trimmed forging from within the latter.

The im roved hollow trimming body or chair is 1 lustrated in the accompanying drawings, in which,

Figure 1 is a plan view; Fig. 2 is an end view, and Fig. 3 1s a side elevation; Figs. 4, 5 and 6 are respectively similar views to Figs. 1, 2 and 3, but showing a modification in the manner of the hinge connecting a movable supporting member at the open end portion of the chair.

Similar characters of reference indicate corresponding parts in all of the views.

In the drawings,A represents a hollow body or chair, the same including a suitably massive base (L and op osite upstanding integrally formed side walls I) I) provided at the upper edges thereof with specially shaped rests or seats d d for the support, removable thereon, of the trimming die plate B, within which is the die opening 1 the shape of which is variable in diffcrentinstances to correspond to that of differently finished forgings.

The substantially trough-shaped hollow body or chair is constructed open essentially at one of its ends, and provided at such open end is a member or block C having an extension hinge lug f which is matched between ear lugs g g integrally formed at one end of the chair near one side thereof, a suitable pivot-stud h connecting the hinge lugs. The said hinged and movable block or member C is of such dimensions vertically as to be itself supported while in the inward or closed osition thereof by, and on, the base of the 0 air, and to then also be in contact under and support the adjacent end portion of the die plate; and yet the said supporting member is conveniently susceptib e of removal by being swung on its hinge out from the open end of the chair to leave free way from within the latter for the withdrawal of the forging forced by the male trimming die through the die opening.

The block or hinged member C has at the vertical edge thereof adjacent the hinge a screw, the shank of which is adjustably enaged in the block for constituting a stop for imiting the inward movement of the die plate supporting part.

In the drawings, as a matter of increased convenience and for rendering any one of the chairs either a right or left, the hinged die plate supporting member is shown duplicated in both ends of the chair, which, in such case, are open.

In Figs. 4, 5 and 6, the supporting member C instead of being hinged on a vertical axis for a swinging movement in a horizontal plane is shown as hinged at the lower end of the chair on a horizontal axis for a quadrantal swinging movement from a horizontal open position to a vertical, die plate supporting position, as is manifest, for substantially the same beneficial and reinforcing eflectrelatively to the chair spanning end portion of the trimming die plate.

I claim 1. In an apparatus for trimming forgings, a hollow metallic body having an opening at its end, and including a top plate provided with a trimming die opening therethrough, and provided with a member which is hinge connected to the hollow body and movable to have a supporting engagement under the end portion of the die plate and to be displaced from the 0 en end of the hollow body for freely permitting thewithdrawal of a trimmed forging.

2. In an apparatus for trimming forgings, a hollow metallic trough shaped body or chair having an opening at its end, and having at the upper edge of its upstanding opposite walls step shaped rests or seats, a top plate provided with a trimming die opening therethrough, removably supported at its opposite edge portions by said rests, and a member, hinge-connected to the hollow body and movable to have a supporting engagement under the end portion of the die plate and to be displaced from the end of the hollow body for permitting, freely, the withdrawal of a trimmed forging from within the chair.

3. In an apparatus for trimming forgings, a hollow metallic body or chair having an opening at its end, and including a top plate provided with a trimming die opening therethrough, and provided with a member which is hinge connected to the end portion of the chair and movable and adapted to be itself supported in one position thereof by the base of the chair, and to then support the end portion of the die plate, and to be displaced from the open end of the chair to permit the withdrawal from therewithin of a trimmed forging.

Signed by me at Springfield, Mass, in presence of two subscribing witnesses.

LUCIEN P. BLOT.

Witnesses WM. S. BELLows, G. R. DRISCOLL. 

